Brenna was soon shown to be the true leader of her people, as her fiery attitude and fierce independence flared in defense of her people's welfare. She helped alleviate the chaos that ensued when the Bringloidi were beamed aboard the Enterprise-D. Lieutenant Worf compared her spirit to that of a Klingon woman, and during a verbal confrontation with her in the Enterprise-D cargo bay, asked her if she had ever considered a career in security.
She displayed romantic interest in Commander William T. Riker, and was successful in seducing him. However, to provide for her people and not wishing to be separated from her father, she agreed to settle among the Mariposan colonists and interbreed with them, helping to establish a viable genetic base in exchange for the integration of the Bringloidi into Mariposan society. (TNG: "Up The Long Ladder")